Metallurgy of microalloyed 24 carat golds

被引:42
作者
Corti, CW [1 ]
机构
[1] Gold Bulletin World Gold Council, London SW1Y 4BP, England
关键词
Beryllium; Gold Atom; Gold Alloy; Solid Solution Hardening; Gold Jewellery;
D O I
10.1007/BF03214789
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Pure gold is relatively soft with a low yield point and this has several drawbacks in the fabrication of 24 ct gold jewellery, limiting design possibilities as well as making such jewellery prone to scratching and wear. In recent years, however, there have been a number of hardened 24 ct materials developed with finenesses of 99.5-99.9%, some already in commercial production, where improved hardness and strength have been achieved by microalloying. This paper examines their metallurgy-the theoretical basis for hardening and some candidate alloying elements which could form the basis of microalloyed 24 ct golds. These are compared to known published information on the compositions and properties of actual microalloyed 24 ct golds. The scope for adapting the microalloying approach to 22 ct and other carat golds is also discussed.
引用
收藏
页码:39 / 47
页数:9
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